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Old May 14, 2007, 04:33 AM
Babrbarossa's Avatar
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Default The 2900XT is here!

This card easily takes the price performance crown, but still doesn't beat the 8800GTX and has high power consumption and fan noise- I think this will definately be a watercooler's card and Danger Den and Thermaltake have already developed coolers for them. Here's a pic with the new Danger Den waterblock.



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FEATURES
  • 700 million transistors on 80nm HS fabrication process
  • 512-bit 8-channel GDDR3/4 memory interface
Ring Bus Memory Controller
  • Fully distributed design with 1024-bit internal ring bus for memory reads and writes
  • Optimized for high performance HDR (High Dynamic Range) rendering at high display resolutions
Unified Superscalar Shader Architecture
  • 320 stream processing units
  • Dynamic load balancing and resource allocation for vertex, geometry, and pixel shaders
  • Common instruction set and texture unit access supported for all types of shaders
  • Dedicated branch execution units and texture address processors
  • 128-bit floating point precision for all operations
  • Command processor for reduced CPU overhead
  • Shader instruction and constant caches
  • Up to 80 texture fetches per clock cycle
  • Up to 128 textures per pixel
  • Fully associative multi-level texture cache design <
  • DXTC and 3Dc+ texture compression
  • High resolution texture support (up to 8192 x 8192)
  • Fully associative texture Z/stencil cache designs
  • Double-sided hierarchical Z/stencil buffer
  • Early Z test, Re-Z, Z Range optimization, and Fast Z Clear
  • Lossless Z & stencil compression (up to 128:1)
  • Lossless color compression (up to 8:1)
  • 8 render targets (MRTs) with anti-aliasing support
  • Physics processing support
Full support for Microsoft DirectX 10.0
  • Shader Model 4.0
  • Geometry Shaders
  • Stream Output
  • Integer and Bitwise Operations
  • Alpha to Coverage
  • Constant Buffers
  • State Objects
  • Texture Arrays
Dynamic Geometry Acceleration
  • High performance vertex cache
  • Programmable tessellation unit
  • Accelerated geometry shader path for geometry amplification
  • Memory read/write cache for improved stream output performance
Anti-aliasing features
  • Multi-sample anti-aliasing (up to 8 samples per pixel)
  • Up to 24x Custom Filter Anti-Aliasing (CFAA) for improved quality
  • Adaptive super-sampling and multi-sampling
  • Temporal anti-aliasing
  • Gamma correct
  • Super AA (CrossFire configurations only)
  • All anti-aliasing features compatible with HDR rendering
Texture filtering features
  • 2x/4x/8x/16x high quality adaptive anisotropic filtering modes (up to 128taps per pixel)
  • 28-bit floating point HDR texture filtering
  • Bicubic filtering
  • sRGB filtering (gamma/degamma)
  • Percentage Closer Filtering (PCF)
  • Depth & stencil texture (DST) format support
  • Shared exponent HDR (RGBE 9:9:9:5) texture format support
CrossFire™ Multi-GPU Technology
  • Scale up rendering performance and image quality with 2 or more GPUs
  • Integrated compositing engine
  • High performance dual channel interconnect
ATI Avivo™ HD Video and Display Platform
  • Two independent display controllers <
  • Drive two displays simultaneously with independent resolutions, refresh rates, color controls and video overlays for each display
  • Full 30-bit display processing
  • Programmable piecewise linear gamma correction, color correction, and color space conversion
  • Spatial/temporal dithering provides 30-bit color quality on 24-bit and 18-bit displays
  • High quality pre- and post-scaling engines, with underscan support for all display outputs
  • Content-adaptive de-flicker filtering for interlaced displays
  • Fast, glitch-free mode switching
  • Hardware cursor
  • Two integrated dual-link DVI display outputs
  • Each supports 18-, 24-, and 30-bit digital displays at all resolutions up to 1920x1200 (single-link DVI) or 2560x1600 (dual-link DVI)
  • Each includes a dual-link HDCP encoder with on-chip key storage for high resolution playback of protected content
  • Two integrated 400 MHz 30-bit RAMDACs
  • Each supports analog displays connected by VGA at all resolutions up to 2048x1536
  • HDMI output support
  • Supports all display resolutions up to 1920x1080
  • Integrated HD audio controller with multi-channel (5.1) AC3 support, enabling a plug-and-play cable-less audio solution
  • Integrated Xilleon™ HDTV encoder
  • Provides high quality analog TV output (component/Svideo/ composite)
  • Supports SDTV and HDTV resolutions
  • Underscan and overscan compensation
  • HD decode acceleration for H.264/AVC, VC-1, DivX and MPEG-2 video formats
  • Flawless DVD, HD DVD, and Blu-Ray playback
  • Motion compensation and IDCT (Inverse Discrete Cosine Transformation)
  • HD video processing
  • Advanced vector adaptive per-pixel de-interlacing
  • De-blocking and noise reduction filtering
  • Edge enhancement
  • Inverse telecine (2:2 and 3:2 pull-down correction)
  • Bad edit correction
  • High fidelity gamma correction, color correction, color space conversion, and scaling
  • MPEG-2, MPEG-4, DivX, WMV9, VC-1, and H.264/AVC encoding and transcoding
  • Seamless integration of pixel shaders with video in real time
  • VGA mode support on all display outputs
  • PCI Express x16 bus interface
  • OpenGL 2.0 support

Last edited by Babrbarossa; May 14, 2007 at 04:47 AM.
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Old May 14, 2007, 05:01 AM
SKYMTL's Avatar
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Well, out through the window goes all this BS of it using more than 200W under load.

8800GTX power usage: 145W

Difference between HD 2900XT and 8800GTX in most tests: about 30W

HD2900XT power usage: about 175W.
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Old May 14, 2007, 05:36 AM
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Damn... I was so much hoping for it to beat the 8800GTX. I suppose the XTX version will do, yeah ? Anybody knows the release date for the XTX ?
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Old May 14, 2007, 05:44 AM
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The XTX is OEM only for the time being.
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Old May 14, 2007, 05:49 AM
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Well-- on further reading, while it performs well in beenchmarks, it doesn't beat out the GTS by much in actual games- and with the higher draw, it's not that clear of a winner- however, I have seen some suggestions that futher driver development can be expected to lead to significant performance gains. I'd be interested in seeing a side by side image quality comparison as well, ATI has always been known for their great image richness, and with the latest advances, hopefully it will have an edge in that area.

Last edited by Babrbarossa; May 14, 2007 at 05:55 AM.
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Old May 14, 2007, 06:59 AM
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I was really hoping for ATI to have some half decent drivers this time around but MAN was that a pipe dream.
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Old May 14, 2007, 08:06 AM
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I've been anxious to see what the release/reviews would do to the AMD stock prices today- Very happy to say that they're already up 61cents TO 15.15USd!!!

This is the highest since January- Glad I held on to them!
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Old May 14, 2007, 08:11 AM
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Wait till you see what happens when the HD 2600-series is shown to stomp all over the 8600-series.
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